Saliency-preserving distinctive low-footprint photograph aging effects

Abstract

Technologies for modifying a digital image to take on the appearance of an antique image. Such modifying is typically based on generating and rendering various effects that are blended with the input image, such as color transformation, simulating film grain, dust, fibers, tears, and vintage borders. Such effects may be rendered to various layers that are overlaid on a color transformed image resulting in what appears to be an antique image.

The invention claimed is: 
     
       1. A method performed on a computing device, the method comprising:
 projecting, by the computing device, a repeller point at a location on an effect layer, where the location of the repeller point corresponds to a location of a salient feature in an image; 
 rendering, by the computing device, a film effect on the effect layer, where the rendering comprises positioning the film effect at a position that is a random location on the effect layer and where the position is further adjusted in accordance with a distance between the random location and the location of the projected repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect; 
 blending, by the computing device subsequent to the rendering, the effect layer with the image resulting in a final image. 
 
     
     
       2. The method of  claim 1  where the rendered film effect is one of a plurality of film effects rendered in a uniform distribution on the effect layer. 
     
     
       3. The method of  claim 1  where the rendered film effect is at least one of a simulated dust grain, a simulated fiber, and a simulated scratch. 
     
     
       4. The method of  claim 1  where the random location is further adjusted based on a probability that the rendered film effect should be positioned at the random location. 
     
     
       5. The method of  claim 4  where the probability is a function of the distance between the random location of the rendered film effect and the location of the repeller point or the another location of the another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       6. The method of  claim 4  where the probability approaches zero as the random location of the rendered film effect approaches the location of the repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       7. The method of  claim 4  where the adjusting comprises discarding the rendered film effect. 
     
     
       8. A computing device comprising:
 at least one processor; 
 memory that is coupled to the at least one processor and that includes computer-executable instructions that, based on execution by at least one processor, configure the at least one computing device to perform actions comprising:
 projecting, by the computing device, a repeller point at a location on an effect layer, where the location of the repeller point correspond to a location of a salient feature in an image; 
 rendering, by the computing device, a film effect on the effect layer, where rendering comprises positioning the film effect at a position that is a random location on the effect layer and where the position is further adjusted in accordance with a distance between the random location and the location of the projected repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect; and 
 blending, by the computing device subsequent to the rendering, the effect layer with the image resulting in a final image. 
 
 
     
     
       9. The computing device of  claim 8  where the rendered film effect is one of a plurality of film effects rendered in a uniform distribution on the effect layer. 
     
     
       10. The computing device of  claim 8  where the rendered film effect is at least one of a simulated dust grain, a simulated fiber, and a simulated scratch. 
     
     
       11. The computing device of  claim 8  where the random location is further adjusted based on a probability that the rendered film effect should be positioned at the random location. 
     
     
       12. The computing device of  claim 11  where the probability is a function of the distance between the random location of the rendered film effect and the location of the repeller point or the another location of the another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       13. The computing device of  claim 11  where the probability approaches zero as the random location of the rendered film effect approaches the location of the repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       14. The computing device of  claim 11  where the positioning of the rendered film effect is adjusted by discarding the rendered film effect. 
     
     
       15. At least one computer-readable medium storing computer-executable instructions that, based on by a computing device, configure the computing device to perform actions comprising:
 projecting, by the computing device, a repeller point at a location on an effect layer where the location of the repeller point corresponds to a location of a salient feature in an image; 
 rendering, by the computing device, a film effect on the effect layer, where the rendering comprises positioning the film effect at a position that is a random location on the effect layer and where the position is further adjusted in accordance with a distance between the random location and the location of the projected repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect; 
 blending, by the computing device subsequent to the rendering, the effect layer with the image resulting in a final image. 
 
     
     
       16. The at least one computer-readable medium of  claim 15  where the rendered film effect is one of a plurality of film effects rendered in a uniform distribution on the effect layer, or where the rendered film effect is at least one of a simulated dust grain, a simulated fiber, and a simulated scratch. 
     
     
       17. The at least one computer-readable medium of  claim 15  where the random location is further adjusted based on a probability that the rendered film effect should be positioned at the random location. 
     
     
       18. The at least one computer-readable medium of  claim 17  where the probability is a function of the distance between the random location of the rendered film effect and the location of the repeller point or the another location of the another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       19. The at least one computer-readable medium of  claim 17  where the probability approaches zero as the random location of the rendered film effect approaches the location of the repeller point or another location of another repeller point that is nearest to the random location of the rendered film effect. 
     
     
       20. The at least one computer-readable medium of  claim 17  where the adjusting comprises discarding the rendered film effect.